| ACRONYM |
DESCRIPTION |
| h |
HOUR |
| H |
MOMENTUM |
| H/K |
HOUSEKEEPING |
| H/R I/F |
HIGH RATE INTERFACE |
| H/W |
HARDWARE |
| HA |
HEAT-SHIELD ASSEMBLY |
| HAB |
HABITATION |
| HABT |
HABITABILITY TECHNOLOGY |
| HAC |
HUGHES AIRCRAFT CORPORATION |
| HALOE |
HALOGEN OCCULTATION EXPERIMENT |
| HAPEX |
HYDROLOGICAL ATMOSPHERIC PILOT EXPERIMENT |
| HAW |
HAWAII STDN STATION (NASA) |
| HBW |
HALF-POWER BANDWIDTH |
| HBW |
HALF-BANDWIDTH |
| HCA |
HEATER CONTROL ASSEMBLY |
| HCE |
HEAT CONTROL ELECTRONICS |
| HCMM |
HEAT CAPACITY MAPPING MISSION (NASA, LAUNCH) |
| HDR |
HIGH DATA RATE |
| HE |
HIGH ECCENTRICITY ORBIT |
| HEAO |
HIGH ENERGY ASTRONOMICAL/ASTRONOMY OBSERVATORY |
| HEIE |
HIGH ENERGY ISOTOPE EXPERIMENT |
| HELIO |
HELIOCENTRIC |
| HEO |
HIGH EARTH ORBIT |
| HEPAD |
HIGH ENERGY PROTON AND ALPHA-PARTICLE DETECTOR |
| HETM |
HIRS ENGINEERING TEST MODEL |
| HEX OR hex |
HEXADECIMAL |
| HF |
HIGH FREQUENCY |
| HFPA |
HARDWARE FLOATING-POINT ACCELERATOR |
| Hg |
MERCURY |
| HGA |
HIGH GAIN ANTENNA |
| HH |
HORIZONTAL-HORIZONTAL POLARIZATION OF ELECTROMAGNETIC RADIATION |
| HH |
HITCHHIKER (NASA/WITH -G, GSFC; WITH -H, MSFC; SHUTTLE RELATED) |
| HIF |
HISTORICAL INSTRUMENT FILE |
| HIMAWARI |
(SUNFLOWER) JAPANESE GMS |
| HIMSS |
HIGH RESOLUTION MICROWAVE SPECTROMETER SOUNDER |
| HIRDLS |
HIGH RESOLUTION DYNAMICS LIMB SOUNDER |
| HIRIS |
HIGH RESOLUTION IMAGE/IMAGING SPECTROMETER |
| HIRIS |
HIGH RESOLUTION INFRARED SOUNDER |
| HIRS |
HIGH RESOLUTION INFRARED RADIATION SOUNDER |
| HIRS/2 |
HIGH RESOLUTION INFRARED RADIATION SOUNDER (MOD 2) |
| HIRS/2I |
HIGH RESOLUTION INFRARED RADIATION SOUNDER (MOD 2) |
| HIRS/3 |
HIGH RESOLUTION INFRARED RADIATION SOUNDER (MOD 3) |
| HIS |
HIGH RESOLUTION INTERFEROMETER SOUNDER/SPECTROMETER |
| HITCHHIKER |
SEE HH (NASA) |
| HLAG |
HIGH INCLINATION LOW ENERGY ASTRONOMY PAYLOAD GROUP |
| HM |
HABITATION MODULE |
| HME |
HANDHELD MICROGRAVITY EXPERIMENT (NASA) |
| HMF |
HEALTH MAINTENANCE FACILITY |
| HMMR |
HIGH-RESOLUTION MULTIFREQUENCY MICROWAVE RADIOMETER |
| HOL |
HIGH ORDER LANGUAGE |
| HOW |
HAND-OVER WORD |
| Hp |
PARALLEL MAGNETIC FIELD |
| HPCG |
HANDHELD PROTEIN CRYSTAL GROWTH MIDDECK EXPERIMENT (NASA) |
| HPE |
HEAT PIPE EXPERIMENT (FOREIGN HH-G PAYLOAD) |
| HPF |
HAZARDOUS PROCESSING FACILITY |
| HPTE |
HIGH-PRECISION TRACKING EXPERIMENT (NASA/LASER IN ATMOSPHERE) |
| HQ |
HEADQUARTERS |
| hr |
HOUR |
| HR & T |
HEAT REJECTION AND TRANSPORT |
| HRB |
HAZARDOUS REVIEW BOARD |
| HRD |
HIGH RATE DEMULTIPLEXER |
| HRDH |
HIGH RATE DATA HANDLING |
| HRDI |
HIGH-RESOLUTION DOPPLER IMAGER |
| HRF |
HUMAN RESEARCH FACILITY |
| HRFAX |
HIGH-RESOLUTION FAX |
| HRFM |
HIGH RATE FRAME MULTIPLEXER |
| HRI |
HIGH RATE INSTRUMENT |
| HRIR |
HIGH-RESOLUTION INFRARED RADIOMETER |
| HRIS |
HIGH-RESOLUTION IMAGING SPECTROMETER (ESA) |
| HRPT |
HIGH-RESOLUTION PICTURE TRANSMISSION (NOAA DIRECT BROADCAST) |
| HRPT |
HIGH RATE PICTURE TRANSMISSION |
| HRSO |
HIGH RESOLUTION SOLAR OBSERVATORY |
| HRTR |
HIGH RATE TAPE RECORDER |
| HRTS |
HIGH-RESOLUTION TELESCOPE SPECTROGRAPH |
| HRV |
HIGH-RESOLUTION VISIBLE IMAGER |
| HSD |
HIGH-SPEED DATA |
| HSLP |
HIGH SPEED LINE PRINTER |
| HST |
HUBBLE SPACE TELESCOPE (NASA) |
| HSTF |
HIGH SPEED TELEMETRY FORMATTER |
| HST-R |
HUBBLE SPACE TELESCOPE REVISIT (NASA/REPLACEMENT OF UNITS) |
| Ht |
TRANSVERSE MAGNETIC FIELD |
| HTM |
HIGH THROUGHPUT MISSION |
| HTPB |
HYDROXY-TERMINATED POLYBUTADIENE |
| HV |
HORIZONTAL-VERTICAL POLARIZATION OF ELECTROMAGNETIC RADIATION |
| HV |
HIGH VOLTAGE |
| HVPI |
HIGH VOLTAGE PLASMA INTERACTION |
| HVPS |
HIGH VOLTAGE POWER SUPPLY |
| HW |
HARDWARE |
| HWCI |
HARDWARE CONFIGURATION ITEM |
| HX |
HEAT EXCHANGER |
| Hz |
HERTZ (FORMALLY CYCLES PER SECOND) |
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